Abstract
Previously, we showed that activated coagulation factor X (FXa) inhibits migration of breast, lung and colon cancer cells. We showed that the effect of FXa on migration was protease-activated receptor (PAR)-1-dependent, but the subsequent cellular signaling routes remained elusive. In the current manuscript, we show that both the Rho/ROCK and Src/FAK/paxillin pathways are required for FXa-mediated inhibition of breast cancer cell migration. FXa induced pronounced stress fiber formation that was partially inhibited by pre-treatment with specific ROCK or Src inhibitors. Downstream of Rho/ROCK and Src/FAK/paxillin, FXa induced myosin light chain phosphorylation and LIMK1 activation resulting in cofilin inactivation. Knocking-down LIMK1 expression abolished FXa-induced inhibition of cell invasion. Our results reveal that FXa-mediated sustained cofilin inactivation leads to stabilization of actin. laments incompatible with migration. Overall we confirm that, beyond its role in blood coagulation, FXa plays a key role in cell migration and we unravel a new mechanism of PAR-1-mediated inhibition of migration via Rho and Src dependent pathways. (C) 2010 Elsevier Ltd. All rights reserved.
| Original language | English |
|---|---|
| Pages (from-to) | E323-E328 |
| Number of pages | 6 |
| Journal | Thrombosis Research |
| Volume | 125 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jun-2010 |
Keywords
- Coagulation factor Xa
- Cancer cell
- Cell migration
- Protease activated receptor
- Signaling
- MEDIATED TYROSINE PHOSPHORYLATION
- PROTEASE-ACTIVATED RECEPTOR-2
- FOCAL ADHESION KINASE
- TUMOR-CELLS
- SPHINGOSINE 1-PHOSPHATE
- DIFFERENTIAL REGULATION
- COUPLED RECEPTOR
- CARCINOMA CELLS
- FACTOR-VIIA
- LIM KINASE